To Create A Hardware Mirrored Volume Of The Default Boot Device - Sun Oracle Netra T5440 Administration Manual

3. To check the status of a RAID mirror, type the following command:
# raidctl
RAID
Volume
--------------------------------------------------------
c0t0d0
The preceding example indicates that the RAID mirror is still resynchronizing
with the backup drive.
The following example shows that the RAID mirror is synchronized and online.
# raidctl
RAID
Volume
------------------------------------------------------
c0t0d0
The disk controller synchronizes IM volumes one at a time. If you create a second
IM volume before the first IM volume completes its synchronization, the first
volume's RAID status will indicate RESYNCING, and the second volume's RAID
status will indicate OK. Once the first volume has completed, its RAID status
changes to OK, and the second volume automatically starts synchronizing, with a
RAID status of RESYNCING.
Under RAID 1 (disk mirroring), all data is duplicated on both drives. If a disk
fails, replace it with a working drive and restore the mirror. For instructions, see
"To Perform a Mirrored Disk Hot-Plug Operation" on page
For more information about the raidctl utility, see the raidctl(1M) man page.
▼ To Create a Hardware Mirrored Volume of the Default
Boot Device
Due to the volume initialization that occurs on the disk controller when a new
volume is created, the volume must be configured and labeled using the format(1M)
utility prior to use with the Solaris Operating System (see
Hardware RAID Volume for Use in the Solaris Operating System" on page
Because of this limitation, raidctl(1M) blocks the creation of a hardware RAID
volume if any of the member disks currently have a file system mounted.
This section describes the procedure required to create a hardware RAID volume
containing the default boot device. Since the boot device always has a mounted file
system when booted, an alternate boot medium must be employed, and the volume
58 Sun Netra T5440 Server Administration Guide • April 2010
Volume RAID
Type Status
IM RESYNCING
Volume RAID
Type Status
IM OK
RAID Disk
Disk Status
c0t0d0 OK
c0t1d0 OK
RAID
Disk
c0t0d0
c0t1d0
"To Configure and Label a
Disk
Status
OK
OK
65.
61).